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Sunday, January 10, 2016

Classification of Electrode - AWS

Dear Readers,
The American Welding Society’s classification number series for welding electrodes has been adopted by the welding industry. AWS CLASSIFICATION A 5.1 & 5.5 for Covered Carbon Steel & Low alloy steel welding electrodes. The electrode identification system for steel arc welding is set up as follows:
E
7
0
1
8
X
1. Prefix Letter 'E' stands electrode for arc welding.
2. The first two digits indicate tensile strength (the resistance of the material to forces trying to pull it apart) in thousands of pounds per square inch of the deposited metal.
3. The third digit indicates the position of the weld.
            1 is for all positions;
            2 is for flat and horizontal positions only;
            3 is for flat position only.
4. The fourth digit indicates the type of electrode coating and the type of power supply used;
                0. High cellulose sodium DC reverse polarity (+)
                1. High cellulose potassium AC or  DC reverse polarity (+)
                2. High titania sodium AC or DC straight polarity (-)
                3. High titania potassium AC or DC either polarity ( ± )
                4. Iron powder titania AC or DC either polarity ( ± )
                5. Low Hydrogen sodium DC reverse polarity (+)
                6. Low Hydrogen potassium AC or  DC reverse polarity (+)
                7. High iron oxide, iron powder AC /DC (+) / DC (-)
                8. Low Hydrogen potassium ,iron powder AC/DC (+)
5. Suffix Letter 'X' stands for suffixes A1,B1,B2,B3,C1,C2,C3,D1,D2,G,M etc. and designates the chemical composition of the deposited weld metal.

Example illustrated in below picture. Click on Picture to enlarge
 
For Example let us see E7018
 
The number E7018 indicates an arc welding electrode with a minimum stress relieved tensile strength of 70,000 psi; is used in all positions; and Low Hydrogen potassium ,iron powder with AC/DC (+) polarity is required.

For More Details about Deposition of Electrode click here

7 comments:

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V.R.M.Sivakumar said...

Good. keep it up.

tamer said...

فنى تركيب غرف بالرياض
فني تركيب غرف بالرياض يعد رائد في مجال فك وتركيب غرف النوم وغرف أطفال وغرف الجلوس فهي الحل الأمثل لك عميلنا العزيز في أعمال الفك والتركيب وكل ما ترغب به وليس هذا فقط بل حريصون على تقديم السعر الأقل بالسوق السعودي، فأياً كان العمل الذي ترغب به من أفضل فني تركيب غرف بالرياض فتأكد أنه سيتم تقديمه بالخدمة الكاملة وبالسعر الأقل فالتركيب و الفك نقوم به بأفضل سعر و بجودة ليس لها مثيل عند أي فني آخر حيث اننا نعتمد علي خبراء و عمالة مدربة علي أعلى مستوى من الجودة وتستطيع التعامل مع جميع أنواع غرف النوم و الموبيليات و الاثاث.

تركيب غرف نوم صينى بالرياض
ويعتبر نوع الغرف الصيني من غرف النوم الأكثر طلبا واستخداما فى الرياض لذلك فإن تركيب غرف نوم صيني بالرياض هو الأكثر بحثاً وطلبا وعلى الرغم من كونه الأيسر فى التركيب حيث يأتي مزوداً بكافة المفصلات والمسامير والبراغي التى تحتاج إليها العامل أو المهندسين فى التركيب إلا أن البعض يلجأ إلى الاستعانة بعامل متخصص يقوم بإنجاز العمل المطلوب بدقة أكبر وإحترافيه أعلي مما يساعد على التقليل من فرص الأخطاء أو تلف القطع الصيني ويقوم فني التركيب غرف بالرياض باستخدام مجموعة من الأدوات التى تساعده على إنجاز عمله بكل يسر وتكون هذه الأدوات مستوردة من الخارج لضمان جودتها وكفاءتها اتصل بنا على الأرقام التالية.

Zina Samir said...


شركات مكافحة الحشرات بحفر الباطن
مظلات وسواتر
سواتر
شركة نقل عفش بحفر الباطن
شركة كشف تسربات المياه بحفر الباطن
هناجر
شركة مكافحة حشرات بخميس مشيط
شركة نقل عفش بخميس مشيط
شركة تنظيف منازل بخميس مشيط
شركة تنظيف منازل بالدمام

Zina Samir said...



مطلوب دهان بجدة
افضل محل دهانات بجده
دهان بجده
دهان جدة
دهان جده
دهان بالرياض
دهان الرياض
مقاول دهانات بالرياض
افضل عمال دهانات
معلم دهانات فلبيني

Sowmiya R said...

I must thank you for the efforts you have put in writing this blog.
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menna said...

شركة تنظيف كنب بالبخار بالشارقة
شركة تنظيف سجاد بالبخار بالشارقة
شركة تنظيف موكيت بالبخار بالشارقة

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